File content as of revision 2:635c58eb70fb:

#include "mbed.h"
#include "N5110.h"
#include "BMP180.h"

#define PI 3.14159265359

//LCD inputs
N5110 lcd(p7,p8,p9,p10,p11,p13,p26);

//serial port for debugging
Serial serial(USBTX,USBRX);

//LED outputs
BusOut leds(LED4,LED3,LED2,LED1);  // LEDs for display


//select button
DigitalIn pushbutton1(p19);


//barometer sensor input
BMP180 bmp180(p28,p27);   // SDA, SCL

//warning LED
PwmOut Redled(p24);

//globals
int selectedOption = 0;
int buttonPressed = 0;

//boundary conditions - screen
int cells[84][48];

//shows pressure reading and temperature
void measurement()
{
    Measurement measurement;  // measurement structure declared in BMP180 class
    while(1) {

        // read values (T in Celsius and P in mb) and print over serial port
        measurement = bmp180.readValues();
        serial.printf("T = %.2f C P = %.2f mb\n",measurement.temperature,measurement.pressure);

        char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
        // so can display a string of a maximum 14 characters in length
        // or create formatted strings - ensure they aren't more than 14 characters long
        int temperature = measurement.temperature;
        int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
        // it is important the format specifier ensures the length will fit in the buffer
        if (length <= 14)  // if string will fit on display
            lcd.printString(buffer,0,1);           // display on screen
//
        float pressure = measurement.pressure;  // same idea with floats
        length = sprintf(buffer,"P = %.2f mb",pressure);
        if (length <= 14)
            lcd.printString(buffer,0,2);
    }
}


//pushbutton - 0

//plots graph of temperature point by point
void graph()
{
    Measurement measurement;  // measurement structure declared in BMP180 class
    int i = 0;
    float graph[84]= {0};
    while(1) {

        // read values (T in Celsius and P in mb) and print over serial port
        measurement = bmp180.readValues();
        //serial.printf("T = %.2f C P = %.2f mb\n",measurement.temperature,measurement.pressure);

        // so can display a string of a maximum 14 characters in length
        // or create formatted strings - ensure they aren't more than 14 characters long
        int temperature = measurement.temperature;
//       int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
        // it is important the format specifier ensures the length will fit in the buffer
//        if (length <= 14)  // if string will fit on display
//            lcd.printString(buffer,0,1);           // display on screen
//
//        float pressure = measurement.pressure;  // same idea with floats
//        length = sprintf(buffer,"P = %.2f mb",pressure);
//        if (length <= 14)
//            lcd.printString(buffer,0,2);

        graph[i]= temperature ;
        lcd.plotArray(graph);
        wait(0.1);  // short delay until next reading
        i++;
        if (i>83) {
            i=0;
            lcd.clear();
        }
    }
}

void settingScreen()
{
    selectedOption = 0;

    while(pushbutton1) {

        lcd.drawRect(70,6,10,10,1);
        lcd.drawRect(70,21,10,10,0);

        lcd.printString("clock",1,1);
        lcd.printString(">",62,1);
        selectedOption = 1;

        wait(2);
        lcd.clear();

        lcd.drawRect(70,6,10,10,0);
        lcd.drawRect(70,21,10,10,1);
        lcd.printString("go back",1,3);
        lcd.printString(">",62,3);
        selectedOption = 2;

        wait(2);
        lcd.clear();

    }

    if(selectedOption == 1) {

        measurement();
    }

    if(selectedOption == 2) {

        graph();

    }
}

void introScreen()
{

    lcd.printString("Welcome to",15,1);
    lcd.printString("Keiarash's",20,2);
    lcd.printString("Multi-Sensor",6,3);
   Redled= 1.0;


}

void mainScreen()
{
    selectedOption = 0;

    while(pushbutton1) {//initialse pushbutton as 0
        
        //check boxes-options to be selected
        lcd.drawRect(70,6,10,10,1);//check box 1
        lcd.drawRect(70,21,10,10,0);//check box 2
        lcd.drawRect(70,37,10,10,0);//check box 3

        //option titles-appropriate to check boxes
        lcd.printString("measure",1,1);//select measure menu
        lcd.printString("settings",1,3);//select settings menu
        lcd.printString("graph",1,5);//select grpah plot
        lcd.printString(">",62,1);//pointer
        selectedOption = 1;

        wait(2);
        lcd.clear();

        lcd.drawRect(70,6,10,10,0);
        lcd.drawRect(70,21,10,10,1);
        lcd.drawRect(70,37,10,10,0);


        lcd.printString("measure",1,1);
        lcd.printString("settings",1,3);
        lcd.printString("graph",1,5);
        lcd.printString(">",62,3);
        selectedOption = 2;

        wait(2);
        lcd.clear();

        lcd.drawRect(70,6,10,10,0);
        lcd.drawRect(70,21,10,10,0);
        lcd.drawRect(70,37,10,10,1);


        lcd.printString("measure",1,1);
        lcd.printString("settings",1,3);
        lcd.printString("graph",1,5);
        lcd.printString(">",62,5);
        selectedOption = 3;

        wait(2);
        lcd.clear();


    }

    if(selectedOption == 1) {

        measurement();
    }

    if(selectedOption == 2) {

        settingScreen();
    }

    if(selectedOption == 3) {

        graph();
    }
}







void check(){
    
    Redled.period(0.02); // set PWM period to 20ms

Measurement measurement;  // measurement structure declared in BMP180 class
    

        // read values (T in Celsius and P in mb) and print over serial port
        measurement = bmp180.readValues();
        serial.printf("T = %.2f C P = %.2f mb\n",measurement.temperature,measurement.pressure);

        char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
        // so can display a string of a maximum 14 characters in length
        // or create formatted strings - ensure they aren't more than 14 characters long
        int temperature = measurement.temperature;
        int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
        // it is important the format specifier ensures the length will fit in the buffer
        if (length <= 14)  // if string will fit on display
            lcd.printString(buffer,0,1);           // display on screen
//
        float pressure = measurement.pressure;  // same idea with floats
        length = sprintf(buffer,"P = %.2f mb",pressure);
        if (length <= 14)
            lcd.printString(buffer,0,2);
    

 if(measurement.temperature > 30 ){

   lcd.printString("temperature high!",1,1);

  Redled=1.0;

 wait(3); }

 if(measurement.temperature < 3){

      lcd.printString("temperature low!",1,1);

   Redled= 1.0;

   wait(3); }

else { lcd.printString("temperature ok!",1,1);
wait(3);
 }
}


 void altitude(){ // creating a new reading from the current ones, this appoximates the altitude in metres.



    Measurement measurement;  // measurement structure declared in BMP180 class
    
while(1){
        // read values (T in Celsius and P in mb) and print over serial port
        measurement = bmp180.readValues();
        
        int temperature = measurement.temperature;
        int pressure = measurement.pressure;  // same idea with floats

float altitude = -(log(pressure/1013.25)*1.38e-23*temperature)/(9.81*28.95);
serial.printf("A = %.2f metres",altitude);
}

}

//main loop
int main()
{
    pushbutton1.mode(PullUp);//initial value 0
    // initiliase barometer
    bmp180.init();
    
    lcd.init();
    introScreen();
    wait(3);
    Redled =0;
    lcd.clear();
    mainScreen();
    
    while(1) {
        }
}